What you're doing wrong is not reading and understanding what mods you're installing. You need to go into advanced mode and then into each submenu and manually select what individual mods you want to include. All that you're doing is building the default core mods which are very subtle changes and bugfixes. Also, if you're expecting new vehicles and weapons then you are probably going to be severely disappointed. None of that exists, and won't until we can figure out the mesh format and create tools to work with it.
ok,i'll try again...and,no new vehicles? no problem,my car is already the best one x)